Modular striker-fired pistol with a pre-fit chassis system, replaceable backstraps, and a 17-round magazine — Ruger's bid to win military and law enforcement duty contracts. Type: Pistol Action: Semi-Automatic Caliber: 9mm Luger Capacity: 17 Year introduced: 2015, USA Weight: 30 oz Overall length: 7.5" Status: Active Intended use: Duty, Self-Defense